/Engine/Source/Runtime/Experimental/Chaos/Public/Chaos/Evolution/ConstraintGroupSolver.h
Collect all the data for the specified range of constraint solvers from their respective constraints. Will be called from multiple threads with different non-overlapping indices.
void GatherConstraints ( const [FReal](API\Runtime\ChaosCore\Chaos\FReal) Dt, const int32 BeginConstraintIndex, const int32 EndConstraintIndex )